文献类型：期刊文献

英文题名：Fractal analysis on variation of shear strength of coarse-grained soils

作者：Du, Jun Liang, Wei Wen, Yiming Feng, Guojian

第一作者：Du, Jun

机构：[1] Institute of Urban and Rural Construction and Engineering Management, Kunming University, No.2 Pu New Road, Kunming, 650214, China; [2] Institute of Mining Engineering, Guizhou Institute of Technology, No.1 Cai Guan Road, Guiyang, 550003, China; [3] Kunming Metallurgy College, No.338 University Road, Kunming, 650033, China

第一机构：Institute of Urban and Rural Construction and Engineering Management, Kunming University, No.2 Pu New Road, Kunming, 650214, China

年份：2016

卷号：31

期号：3

起止页码：28-39

外文期刊名：Revista de la Facultad de Ingenieria

收录：EI(收录号：20164502978536)

语种：英文

外文关键词：Elastic moduli - Fractals - Shear strain - Shear strength - Soils - Strain hardening - Stress-strain curves

摘要：Based on the laboratory tests, the size fractal characteristics of coarse-grained soils were studied by the fractal geometry theory, and relevance of the fractal dimension and shear strength parameters were analyzed. The results indicate that the size distribution of coarse-grained soils has fractal characteristics obviously. There is a negative correlation between the fractal dimension and coarse grained content, which the fractal dimension will decrease with increase of coarse granule. Curve of stress-strain relationship had no obvious peak strength and it was strain-hardening. Shear modulus G1/100decreased and shear modulus Gfincreases at first, then decreases with the increase of fractal dimension under the same normal stress conditions. The internal friction angle has a negative exponential relationship with the fractal dimension, which will decrease with increase of the fractal dimension, but the regularity is not obvious between the cohesive and the fractal dimension.